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Two parallel plate capacitors are constructed, one by a pair of iron plates and the second by a pair of copper plates of same area and same spacings. Then:
the copper plate capacitor has a greater capacitance than the iron one
both capacitors have equal, non-zero capacitances in the uncharged state
both capacitors will have equal capacitances only if they are charged equally
the capacitances of the two capacitors are equal even if they are unequally charged

A

the copper plate capacitor has a greater capacitance than the iron one

B

both capacitors have equal, non-zero capacitances in the uncharged state

C

both capacitors will have equal capacitances only if they are charged equally

D

the capacitances of the two capacitors are equal even if they are unequally charged

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Solution

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Two capacitors one of copper plates and another is of iron
$⟹$ The value of capacitance does not depend on the nature of plates thus,
1) Both capacitors have equal, non-zero capacitance's in uncharged state.
2)The capacitance's of the two capacitors are equal even if they are equally charged.

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